Issues with trying to download base line OS Mojave 10.14
I'm having issues getting Mojave from the app store. when I click open it gives me this error message: "This copy of the Install macOS Mojave application is damaged, and can‘t be used to install macOS."
I've tried to download in both "safe mode" and normal mode. I can not open any other mojave updates without the base line version. I currently have the most recent High Sierra update. any help is appreciated. thanks
MacBook Pro 15″, macOS 10.13